1 /*
2 * Check decoding of prctl PR_GET_NAME/PR_SET_NAME operations.
3 *
4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
5 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "tests.h"
32
33 #ifdef HAVE_PRCTL
34 # include <sys/prctl.h>
35 #endif
36
37 #if defined HAVE_PRCTL && defined PR_GET_NAME && defined PR_SET_NAME
38
39 # include <stdio.h>
40 # include <string.h>
41 # include <unistd.h>
42
43 int
main(void)44 main(void)
45 {
46 static const char str[] = "0123456789abcdef";
47 static const int len = sizeof(str) - 1;
48 char *name = tail_memdup(str, sizeof(str));
49 int i;
50 int rc;
51
52 rc = prctl(PR_SET_NAME, NULL);
53 printf("prctl(PR_SET_NAME, NULL) = %s\n", sprintrc(rc));
54
55 for (i = 0; i <= len; ++i) {
56 rc = prctl(PR_SET_NAME, name + len - i);
57 printf("prctl(PR_SET_NAME, \"%.*s\"%s) = %s\n",
58 i < len - 1 ? i : len - 1,
59 str + len - i,
60 i < len - 1 ? "" : "...",
61 sprintrc(rc));
62 }
63
64 *name = -1;
65 ++name;
66 memcpy(name, str, len);
67
68 for (i = 0; i <= len; ++i) {
69 rc = prctl(PR_SET_NAME, name + len - i);
70 if (i < len - 1)
71 printf("prctl(PR_SET_NAME, %p) = %s\n",
72 name + len - i, sprintrc(rc));
73 else
74 printf("prctl(PR_SET_NAME, \"%.*s\"...) = %s\n",
75 len - 1, str + len - i, sprintrc(rc));
76 }
77
78 rc = prctl(PR_GET_NAME, NULL);
79 printf("prctl(PR_GET_NAME, NULL) = %s\n", sprintrc(rc));
80
81 for (i = 0; i < len; ++i) {
82 rc = prctl(PR_GET_NAME, name + len - i);
83 printf("prctl(PR_GET_NAME, %p) = %s\n",
84 name + len - i, sprintrc(rc));
85 }
86
87 rc = prctl(PR_GET_NAME, name);
88 if (rc)
89 printf("prctl(PR_GET_NAME, %p) = %s\n",
90 name, sprintrc(rc));
91 else
92 printf("prctl(PR_GET_NAME, \"%.*s\") = %s\n",
93 len - 1, name, sprintrc(rc));
94
95 puts("+++ exited with 0 +++");
96 return 0;
97 }
98
99 #else
100
101 SKIP_MAIN_UNDEFINED("HAVE_PRCTL && PR_GET_NAME && PR_SET_NAME")
102
103 #endif
104